System for realizing detritiation of water and realizing method of system

Abstract

The invention discloses a system for realizing detritiation of water. The system comprises a catalytic exchange system, a hydrogen supply system, a tritium-containing water supply system, a tritium-containing hydrogen drying and collecting system, a low-tritium-content water collecting system, a condensing system and a detecting control device. The system can meet all the process requirements of detritiation of water, including continuous treatment processes of vacuumizing the system before operation and alternately drying and activating a molecular sieve bed; the system is reasonable in layout, and the tritium-containing water purification efficiency is greatly improved; and meanwhile, tritium-containing hydrogen with high concentration can be obtained. Meanwhile, the system is convenient to operate and low in energy consumption; the interphase contact area of gas and liquid in the catalytic exchange system is large, the mass transfer coefficient is large, and the reaction efficiency is high; and furthermore, fluid can flow in a fixed direction, so as to quantitatively control the water detritiation efficiency. The catalytic exchange device is simple in structure; compared with a conventional water detritiation exchange column, the catalytic exchange device has the advantage that the height is obviously reduced, and investment of equipment and investment of catalysts are greatly reduced.

Description

technical field [0001] The invention relates to the fields of chemical industry and nuclear technology and equipment, in particular to a system for realizing detritiation of water and its realization method. Background technique [0002] Tritium is a radioactive isotope of hydrogen that is vital in both military and nuclear power. The manufacture of nuclear weapons and the operation of fusion reactors will involve the operation of a large amount of tritium, and some tritium will eventually exist in the form of tritiated water; the operation of nuclear power plants will also produce a large amount of tritium-containing wastewater. If the tritium-containing wastewater is not properly treated, it will cause serious environmental pollution. At the same time, tritium is an extremely trace element in nature and has a very high value. The recovery of tritium in tritium-containing water has high economic value. Therefore, the development of high-efficiency, energy-saving, environm...

AI Technical Summary

Problems solved by technology

[0003] Liquid-phase catalytic exchange (LPCE) technology is a relatively mature water detritization technology at present. It uses multi-section catalytic exchange columns in series to achieve higher reaction efficiency and throughput. However, the disadvantages of this technology are that the equipment is complex and installation The height is high and the processing cost is high; the Pt-based catalyst used is expensive, and the amount of catalyst filled in the multi-section series-connected exchange column is large, and the cost is high; at the same time, the residence time of the gas-liquid phase in the exchange column is difficult to control, and the reaction cannot be quantitatively and accurately controlled Tritium content of post-low tritium water and tritium-containing hydrogen

However, the corresponding water detritiation process has low efficiency and high cost for treating tritium-containing water, and cannot flexibly control the tritium content in the gas-liquid phase after the reaction.

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